Security staff at several German airports will stage another one-day strike on Tuesday. Verdi union called the strike for this Tuesday at Frankfurt, Berlin, Bremen, Hamburg, Hanover, Stuttgart, Duesseldorf and Cologne/Bonn airports.
The industrial action would cause major disruptions and flight cancellations throughout the day, with the security checkpoints outside the transit area to remain closed all day.

Originating passengers departing from Frankfurt will not be able to pass through the legally required security checks and get to their flights. We therefore strongly advise all originating passengers from Frankfurt to avoid coming to the airport. Please check the status of your flight before you travel. If your flight is cancelled, we kindly ask you to refrain from travelling to the airport. More information here